import Mock from 'mockjs'
import { param2Obj } from '../src/utils'

import user from './user'
import table from './table'

const mocks = [...user, ...table]

/*
 * for front mock
 * please use it cautiously, it will redefine XMLHttpRequest,
 * which will cause many of your third-party libraries to be invalidated(like progress event).
 */
export function mockXHR() {

  /*
   * mock patch
   * https://github.com/nuysoft/Mock/issues/300
   */
  Mock.XHR.prototype.proxy_send = Mock.XHR.prototype.send
  Mock.XHR.prototype.send = function() {
    if (this.custom.xhr) {
      this.custom.xhr.withCredentials = this.withCredentials || false

      if (this.responseType) {
        this.custom.xhr.responseType = this.responseType
      }
    }
    this.proxy_send(...arguments)
  }

  function XHR2ExpressReqWrap(respond) {
    return function(options) {
      let result = null
      if (respond instanceof Function) {
        const { body, type, url } = options
        // https://expressjs.com/en/4x/api.html#req
        result = respond({
          method: type,
          body: JSON.parse(body),
          query: param2Obj(url),
        })
      } else {
        result = respond
      }
      return Mock.mock(result)
    }
  }

  for (const i of mocks) {
    Mock.mock(
      new RegExp(i.url),
      i.type || 'get',
      XHR2ExpressReqWrap(i.response),
    )
  }
}

// for mock server
const responseFake = (url, type, respond) => ({
  url: new RegExp(`${process.env.VUE_APP_BASE_API}${url}`),
  type: type || 'get',
  response(req, res) {
    console.log(`request invoke:${req.path}`)
    res.json(Mock.mock(respond instanceof Function ? respond(req, res) : respond))
  },
})

export default mocks.map(route => responseFake(route.url, route.type, route.response))
